Modification of heterogeneous chemistry by complex substrate morphology

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This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Chemistry in many environmental systems is determined at some stage by heterogeneous reaction with a surface. Typically the surface exists as a dispersion or matrix of particulate matter or pores, and a determination of the heterogeneous chemistry of the system must address the extent to which the complexity of the environmental surface affects the reaction rates. Reactions that are of current interest are the series of chlorine nitrate reactions important in polar ozone depletion. The authors have applied surface ... continued below

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15 p.

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Henson, B.F.; Buelow, S.J. & Robinson, J.M. December 31, 1998.

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Description

This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Chemistry in many environmental systems is determined at some stage by heterogeneous reaction with a surface. Typically the surface exists as a dispersion or matrix of particulate matter or pores, and a determination of the heterogeneous chemistry of the system must address the extent to which the complexity of the environmental surface affects the reaction rates. Reactions that are of current interest are the series of chlorine nitrate reactions important in polar ozone depletion. The authors have applied surface spectroscopic techniques developed at LANL to address the chemistry of chlorine nitrate reactions on porous nitric and sulfuric acid ice surfaces as a model study of the measurement of complex, heterogeneous reaction rates. The result of the study is an experimental determination of the surface coverage of one adsorbed reagent and a mechanism of reactivity based on the dependence of this coverage on temperature and vapor pressure. The resulting mechanism allows the first comprehensive modeling of chlorine nitrate reaction probability data from several laboratories.

Physical Description

15 p.

Notes

OSTI as DE98001613

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  • Other Information: PBD: [1998]

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  • Other: DE98001613
  • Report No.: LA-UR--97-3382
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/562542 | External Link
  • Office of Scientific & Technical Information Report Number: 562542
  • Archival Resource Key: ark:/67531/metadc695627

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 20, 2016, 4:28 p.m.

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Henson, B.F.; Buelow, S.J. & Robinson, J.M. Modification of heterogeneous chemistry by complex substrate morphology, report, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc695627/: accessed October 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.